Temper screw



Oct: 21 1924. 1,512,650

J. STROBEL Y TEMPER SCREW Filed Feb. 10. 1923 ll VII/l INVENTOR sepbastrobel,

u BY E M PM 4 nrmmvsys Patented Oct. 21, 1924.

JOSEPH STROBEL, OF TULSA, OKLAHOMA.

TEMPER SCREW.

Application filed February 10, 1923.

To all whom it may concern.

Be it known that I, JosnrH S'rRoBnL, a citizen of the United States, anda resident of Tulsa, in the county of Tulsa. and State of Oklahoma, haveinvented certain new and useful Improvements in Temper Screws, of whichthe following is a specification.

My invention relates to improvements in temper screws and consists moreparticularly in an improvement on the screw handle by which the mainscrew is raised and lowered.

An object of the invention is to provide a ratchet handle for temperscrews which may be adjusted so that either right or left hand turns maybe made, or that the handle may be made rigid with the main screw according to the desires of the operator.

A further object of the invention is to provide a ratchet handle fortemper screws having pawls which may be engaged either separately ortogether or released entirely.

Other objects and advantages will appear in the following specification,reference being had to the accompanying drawing, in which:

Fig. 1 is a ratchet handle,

Fig. 2 is a side elevation thereof,

Fig. 3 is a longitudinal section.

Fig. 1 is a detail cross section on the line H of Fig. 2,

Fig. 5 is a detail cross section on the line 55 of Fig. 3 and Fig. 6 isa detail perspective view of a portion of a temper screw illustratingthe application of the improved ratchet handle.

Attention is first directed to Fi 6 which shows enough of a temper screwto illustrate the application of the invention. As is well known in theart a temper screw is used for the purpose of holding various kinds oftools in drilling a well. The temper screw includes a main screw 1 whichhas threaded engagement with the bottom holders 2 of the reins 3.

At the bottom of the screw there is a yoke 4. which is adapted tosupport the cable by which a tool is carried. It is necessary to givethe screw 1 a turn at each return stroke of the walking beam (not shown)from which the temper screw is carried. This turn of the screw eitherraises or lowers the tool, depending on the direction in which it isturned. As the reins 3 and holders 2 are the parts directly suspendedfrom the walkplan view of the improved Serial No. 618,411.

ing beam, it is quite obvious that a turn of the screw 1 will produce arelative movement thereof and of all carried parts in respect to theholders 2 and reins The aforesaid turning of the main screw 1 isaccomplished by handles 5 and 6. These handles form parts of a head 7which has a bore 8. This bore is occupied by the ratchet 9 which in turnis carried by the main screw 1. The ratchet is composed of a cylinder(Fig. 4) in the middle of which the teeth are formed leaving the endssmooth for the mounting of a pair of collars.

At one side of the axis of the temper screw the head7 is recessed toform a chamber 10. This chamber is occupied by pawls 11 and 12 which arepivotally mounted on studs 13 so as to be capable of rocking in respectto the ratchet 9. The outermost ends of the pawls have rounded heads 1 1and 15 which are adapted to be spread apart by a spring 16.

When spread apart at the heads 14. and 15, thepawls 11 and 12 will bothengage the ratchet 9. Whether the pawls are free to do this, however, iscontrolled by the flange 17 of a collar 18 on the sleeve 19. The handle6, by which this sleeve is carried, is reduced so that the addition ofthe sleeve will make both handles appear as of the same diameter. Thissleeve is mounted on the handle 6 and is kept in place by a nut 20 onthe threaded end 21 of this handle. The collar 18 rides on the circularshoulder formed by the reduction of the handle 6. The sleeve is free toturn, and the reader can see at once that the flange 17 is narrow enough(Fig. 5) to avoid both rounded heads 14: and 15 (should the flange beturned under) and therefore make .it possible for both pawls 11 and 12to engage the ratchet at once and produce a perfectly rigid connectionbetween the ratchet handle and the ratchet 9.

Should the flange 17 be turned to engage the head 15 of the pawl 12,that pawl will be held from engagement with the ratchet 9 making itpossible to perform a counter clockwise turning of the ratchet 9 throughthe instrumentality of the pawl 11. On the other hand, should the flange17 be turned around to engage the rounded head 14 of the pawl 11, onlythe pawl 12 will then function, and in this instance the operation ofthe ratchet handle will cause a clockwise turning of the ratchet 9.

It is to be observed that the ratchet 9 carries two collars 22 and 23.These are of a suifieient thickness to provide an ample supportingflange for the head 7 which ismovable between them and around theratchet 9. These collars may be afiixed to the ratchet 9 in any suitableway, set screws 24 (Fig. 4) being illustrated as an example. Inpractice, the lower collar 22 is sweated in place on the ratchet 9. Itis preferable that the fastening of the collar 23 be left permanentbecause there are times when it is desired to remove thecollar 23 sothat the ratchet handle in turn may be taken ofi".

lVhile the construction and arrangement of the improved ratchet handleis that of a provided with. a bore receiving said ratchet and acommunicating chamber at one side, one of the handles being reduced andthereby forming a circular shoulder, a collar fastened on each of thesmooth ends to provide holding means on which said head turns, a pair ofpawls pivoted in said chamber and having rounded heads beyond thepivots, a spring between the heads pressing them apart and tending tomove the pawls into engagement with the ratchet, a sleeve nevolulolymounted on the reduced handle, said sleeve having a circular collarriding said shoulder" and having a flange adapted to engage either oneof the rounded heads or to be moved out of engagement with bothpermitting the spring to move one of the pawl's' into contact with theratchet or permit both of the pawls to engage so as to produce a rigidconnection, and a threaded end on said reduced handle carrying a nut 45to hold said sleeve in place.

JOSEPH STROBEL.

